Improved zincking oe tinning-bath



PATENTED SEPT. 29., 1868. F. CHASB. ZINGNG'OR TINN ING BATH.

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Letters Patent No. 82,491, date& September 29, 186 8.

IMPROVED ZINGKING OR TINNING-BATH.

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TO AIiL WHOM IT MAY CONCERN:

I Be it known that I, FREDEBIC CHASE. of the city of Phihdelphia, in the State of Pennsylrania, have invented a. new and useful 'Zircking and Tinning-Bath; and`I do hereby declare that the following is a. full, clea r, and ex'act description of the same, -efcrenceheing had to the accompanying drawings, making a. part of this specification, in which i `Figure1 is a. plan View of the said vessel,

Figure 2 o. transverse section of the same, and

Figura amenhrged horizontal section of.part of theside of the same-' Like letters and numbers of reference indicating the same parts when-in the different figures.

Baths or vessels; used for coating large plates, tubes, Ste., of iron with znc or tin, have heretofbre been made oi' thiek plute-iron, and cost'from five to eight hundreddollars for one of the common size. The action of the contained melted metal upon the iron vessel produces an ally or dross which is not only object-ionahle in 'the coating-ntal, but the vessel itself becomes, in'eonsquence, unfit for; use in the course oi' eighteen months or two years. In order to ohvia te tlese'objectionable `resu'lts, lining' of other metals hes lately buen applicd to .the inner side of the iron vessel, but this 'pplication sti-ll further increases the cost of iron vssels, and is, besides, of doubtfl -e fliciencyn I The object-of my ivention is to produ'ce a. bath o' melting-vessel for zincking or tinning large plutes, tubes Sic., of iron, the original cost of which will be much less than the iron vessels of the same size, \vil1 last much; longer in' use, and cannot, owing to'thc materials of which it is made, nlloy with 'the contnincd melted metal or produce dross of any kind; I' i My invention consists, first, of a. bath or ve`ss el-for zin'cking or tinning large plates, fto., ot' iron, made bodly of firc-clay, or its .equivalent carthy substance, :nd, seeond, in the mode' of constrcting the said fireclay bnthor vessel, substcntiully as l ereinater described and specified.

'1:6 enable others to understand and meke my said zineking otinning-vessels, .I will proceed to dcseribe their construction( 4 Y Refcrring to the drowi gs, A' is the bottom of the'bth or vcssel. and B Bits upright sides.

I inuke the sides, B, and the bottomA. of fire-eloy, and unitc them together in the following manner:

I construct the sil'es B by moulding the fire-eloy into tlc form of.sta ves 1', each about four inches in tllickncs and twelve'inches in Width, mere or less, a'd of proper length for the purpose, say four feet, tongued and grim-;ed correspondingly at their edges, and the 'tongue 2, :s well :s the bottom, 3, of each groove, 'with a snppicmentary groove, 4, made along in their mid-widths from end to end of the stare, substuntially as rcpresented in fig. 3, and then dry them slowly, and finally hai-den them by heat in a. kiln in the usal manner practiscd in making fire-bricks and slubs. I then "set" the said stat-es 1' up' together, with their respective tongucs 2 nnd grooves 3 interlocking, so zs to produce the required ilat, oval, or other required form, of the sitit-s'o? the vcsel, substantially as reprcsented -in fig. 1, upon the intended supporting-base or phtfo'n pro.- vided for it over or within the meltingfurnace usually adopted for supporting' e i g the iron vesselsn(scc the faint lincs in fig. 2,) and bind theni 'tightly and firmiy together at their edges by meansof .one o more bands or hoops of plote-iron, 5, having its ends coupled together by a tightening-screw, 6, so that the said band or bands can be firmiy tightened around the outer-si'le of the vessel, (see figs. 1 and 2.) I w adjust P tion of the vesscl bn the platform, and thon form the bottom A, out of the raw material of which the sides B were made', by ptcling it in a. plastie state upon the platform or .supporting-base, but within and around the outside edge of the vosscl, so us to produce the said bottom, A, of sufi'icient depth or thickness. say about five inchs, more or less', and, finally, I then mix up sufficicncy of'th raw, plastc firc-clny and water into a semi-fluid, and with it fill thoroughly all the supplenentnry groovs, 4, in the vessel A, and let the whole stand undisturbcl until dry, after which the furnace may be ignited, and the filling in the grooves 4 and the botto m A. will soon become sulficientlybal zcd and hard to allow of the rcccption of the melted metal, and :i continuou operation of the process of zincking or tinning in the usul msnner.

It will be seen that as the vessel or bath A B is made entirely or' bodily of fire-cluy, or au equivalent earth, with the excption only of the outside band 5, the objectioneble elloy or dross which oecurs in the iron vessels heretofere used cannot arise, .and that the cost of my said vessels" will' be much cheeper in their original enstruction than those ofjthick plate-iron, whether the latter be-lined or not, end that from the fact that' the material of 'which the vessel .is made does not containany metal, a' waste by alloying cannot oceur, and therefore the vessel A' B will last much danger. I

The cost of m'aterial'and constructiou of one of my said bathe or. vessels, of the-size of the large iron vessels in general use, and .which cost from five hundred t'o eight hundred, dollar-s, will not be more thun from 'one hundred to, one hundred 'and fifty dollare, and will last five or six yearin use.

I am aware that a patent wes grante'to Fiederick A. Kruft for liniug th e cast or w'oughtdron vessels with a. substunce which will not be u'ec'ted by or form an alioy with the zine, and which will not so readily form au alloy with the heated iron." I therefo-e do not desire to clainlining a. ziu'cking or tinn'mg-vessel or bathrwith fire-cihy, or a ny other material ,suggested in seid patent; but having thus fuilyfdes'cribed my iuventibn,

What I claim us new, and deir to secure by Letters Pateut, is-- i A zincking or tinning-bath or vessel, constructed bodly of fire-clay; r its equivalent earthy substanca, substantiaily as described. I

I also-cluim constructing u zin :king r tinnng-b'ath of fire-cluy, or its equivalent, substuntiay in the manner set forth und deseribed. V

FREDERIC CHASE. witnesses:

BENI. Moursox,

WM. H. MomsoN. 

